Langrana N A, Lee C K
Spine (Phila Pa 1976). 1984 Mar;9(2):171-5. doi: 10.1097/00007632-198403000-00007.
The purpose of this study is to identify those individuals at risk who have weak trunk muscles and are prone to back pain. The overall thrust of this research is to develop a quantitative method to assess dynamic strength of the trunk muscles. Two unique isokinetic strength testing units in sitting and standing postures have been designed. Three groups of volunteers were tested at different times and places. Quantitative measurements of the maximum strength, fatigue behavior of the abdominal and paraspinal muscles, maximum strength in different age groups and the role of the iliopsoas muscle have been performed. The study shows that women have lower maximum strength but equal or better fatigue endurance than men. There is a significant change in maximum strength with age. The maximum abdominal strength change with age showed a bimodal distribution. The iliopsoas muscle approximately doubled the maximum back strength in flexion. The test in the sitting posture was tolerated better than the test in the standing posture. Isokinetic back strength testing in the sitting posture was found to be effective and safe.
本研究的目的是识别那些躯干肌肉薄弱且易患背痛的高危个体。本研究的总体主旨是开发一种定量方法来评估躯干肌肉的动态力量。已经设计了两种独特的坐姿和站姿等速力量测试装置。三组志愿者在不同时间和地点进行了测试。对最大力量、腹部和脊柱旁肌肉的疲劳行为、不同年龄组的最大力量以及髂腰肌的作用进行了定量测量。研究表明，女性的最大力量较低，但疲劳耐力与男性相当或更好。最大力量随年龄有显著变化。腹部最大力量随年龄的变化呈双峰分布。髂腰肌使屈曲时的最大背部力量增加了约一倍。坐姿测试比站姿测试的耐受性更好。发现坐姿等速背部力量测试是有效且安全的。
